Funding for this research was provided by:
Fondo de Fomento al Desarrollo Científico y Tecnológico (1151015)
Received: 4 September 2020
Accepted: 5 April 2021
First Online: 20 April 2021
: This study was approved by the institutional review board of University of Chile School of Medicine (#045/2015) and was performed in accordance with the Declaration of Helsinki. All participants gave their written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.